摘要： 错误参数。（异常来自 HRESULT:0x80070057 （E_INVALIDARG））An error occurred while trying to instantiate the dbcontext type TestDB2Context see the output window for detailspublic class ProductContext : DbContext{ public ProductContext(): base(@"Data Source=.;Initial Catalog=Product;Integrated Security=True&q 阅读全文